If the K_sp of CuCl₂ Is 1 $\left[ \mathrm { CuCl } _ { 3 } \right] ^ { 2 - }$

Multiple Choice

If the K_sp of CuCl₂ is 1.72×10^-7 and the equilibrium constant of the reaction is 8.6×10^-2, what is the K_f of $\left[ \mathrm { CuCl } _ { 3 } \right] ^ { 2 - }$ ?

A) 3.6×10⁶
B) 9.5×10⁵
C) 5.0×10⁵
D) 6.3×10⁶
E) 2.2×10⁵